books.google.co.uk - Originally published in 1926, McPhee's work was the first to establish a framework for understanding the economic development between 1820-1920 in British West Africa....https://books.google.co.uk/books/about/The_Economic_Revolution_in_British_West.html?id=jpM0I90rC50C&utm_source=gb-gplus-shareThe Economic Revolution in British West Africa